Otaku Engineer in Great Tang Dynasty

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"Master! You haven't slept for two nights? Then go and rest! Let's talk about the ironworks later!"

After finally recovering from the shock, Bo Fu "captured" another meaning and the most important meaning in Han Yuxi's words earlier, and he hurriedly said to Li Zexuan.

Li Zexuan shook his head and said, "Of course it's not that I didn't sleep at all, I took a nap in the middle of it! Let's not talk about this, Mr. Fu, you always look at the drawings first, and if there is anything wrong, let's discuss it together. The ironworks must be brought up as soon as possible. schedule!"

"OK then!"

Seeing Li Zexuan's insistence, Uncle Fu knew that he couldn't be persuaded, so he lowered his head and started to look at the drawings.

The drawings given by Li Zexuan are very particular about the order in which they are placed. First the whole, and then the specifics. The first thing Fubo sees is the overall layout of the ironworks in the future, then the overall structure of each part, and then It is the specific structure diagram of some key components.

As the drawings turned page by page, a huge iron-making factory that was completely different from the style of this era gradually emerged in Fu Bo's mind (for a lifetime of engineering, Fu Bo still has the ability to show pictures with pictures) ), a towering iron furnace stands in the center of the factory, and pipes are drawn out from the body of the blast furnace, just like the rhizomes of an old tree, densely entrenched around, and the two large chimneys are soaring into the clouds, wishing to insert them into the clouds , is constantly breathing thick smoke towards the sky, and the sound of the various machines in the workshop, rumbling, can be heard endlessly!

Uncle Fu was shocked in his heart. Obviously, Li Zexuan, the ironworks, was not playing a small game. Its scale was definitely one of the best in the entire Tang Dynasty! It's just this steel-making method, how could it make him feel so familiar?

"Master! Why does this look like iron making in a shaft furnace?"

Uncle Fu suddenly remembered and said.

China is the first country in the world to use shaft furnaces to make iron. In ancient my country, pig iron smelting mainly used shaft furnaces, which were developed from copper smelting shaft furnaces. At the end of the Spring and Autumn Period, the method of smelting pig iron in the shaft furnace appeared, but this method was not fully popularized until the Northern Song Dynasty.

Shaft furnace ironmaking is an economical and efficient method of ironmaking. Charging from the top, blowing from the bottom, forming the relative movement of the charge falling and the gas rising. The high-temperature gas generated by the combustion rises through the material layer and transfers heat to the charge. The carbon monoxide contained in it also reduces iron oxide. In this way, the thermal energy and chemical energy of combustion are fully utilized at the same time. The charge in the lower layer is gradually reduced and even melted, the charge in the upper layer is slowly lowered from the top of the furnace, and the charge is preheated to reach a higher temperature.

Blast furnace ironmaking is born out of shaft furnace ironmaking, but its optimization of certain structures makes its ironmaking efficiency and ironmaking quality far superior to that of shaft furnace ironmaking!

Li Zexuan said with a smile: "This is not entirely a shaft furnace for iron making. If you look carefully, Mr. Fu, you should be able to tell the difference! I call this type of iron-making furnace a blast furnace!"

Uncle Fu closed his eyes for a moment, then opened his eyes and said, "There are indeed many differences! But this old man doesn't know whether these differences are good or bad!"

Li Zexuan said to himself, "Of course it's good!"

As he said that, he pointed to a drawing and said, "For example, the air inlet of this blast furnace, I combined it together before it finally enters the furnace, and there is a fire pool at the bottom that is isolated from the air inlet. There is coal inside, and the air is heated very hot before entering the furnace, and it can even melt iron directly! In this way, the efficiency of ironmaking will be greatly improved!"

Air preheating is the most critical step to improve ironmaking efficiency in modern steel production. High air temperature is also one of the main technical features of modern blast furnace ironmaking.

First of all, part of the heat required for blast furnace smelting is the combustion heat released by the combustion of the fuel in the hearth, and the other part is the physical heat brought in by the high-temperature hot air. The more heat that the hot air brings into the blast furnace, the less heat of fuel combustion is required, which means the lower the fuel consumption. Therefore, increasing the air temperature can significantly reduce fuel consumption and production costs.

In addition, increasing the air temperature can also help to increase the theoretical combustion temperature before the tuyere, so that the tuyere swirl zone has a higher temperature, and the hearth is full of heat, which is conducive to improving the combustion rate of pulverized coal and increasing the amount of coal injection. Decrease the focal ratio.

Therefore, air preheating is the key technology for blast furnace to realize large coal injection operation, and it is also an extremely important technological progress in the history of blast furnace ironmaking. In Li Zexuan's impression, at least the whole world did not master this technology before the Industrial Revolution.

Uncle Fu seemed to be a little enlightened. He nodded thoughtfully and said, "What the young master said seems quite reasonable, maybe you can give it a try!"

Li Zexuan said with a smile: "Actually, the benefits of this blast furnace are far more than that. In the future, Uncle Fu will gradually realize it! The top priority now is to build this ironworks first! As for the inside of the furnace, I plan to use the Shuozhou one. By the way...the white clay mine will be used as the refractory material, and I will talk about it when Xiaobin brings the soil back! Mr. Fu, your main task now is to first look at the blueprint, what problems can be solved in the construction of the iron smelting plant? "

The first iron-making blast furnace, Li Zexuan did not intend to build a large one. The blast furnace he planned on the drawings had an effective volume of no more than 100 cubic meters. In modern society, the iron-making blast furnace with the largest effective volume in the world is China's Shaganghua Sheng's blast furnace has an effective volume of 5,860 cubic meters and an annual output of nearly 30 million tons of steel!

Therefore, his iron factory is nothing more than a small workshop in modern times! But in ancient times, it was definitely a giant-like existence!

"Well... there shouldn't be a big problem, it's just a little troublesome at most! The old man has started to call craftsmen to plan this matter as soon as possible. Master, you should rest well first, and don't let your body get tired.

broken! "

Uncle Fu flipped through the drawings again, and after thinking about it for a long time, he said.

Li Zexuan finally breathed a sigh of relief. In fact, compared to most traversers, he was definitely lucky, because he had a workshop with many excellent craftsmen around him. He only needed to draw drawings for many new ideas. The craftsmen behind him will try their best to realize his ideas, and he just spends a lot of time drawing drawings!

"Haha! Thank you Uncle Fu for your concern. My health is still fine! But you should always pay attention to your health! Don't be too tired!"

Li Zexuan smiled gently and said.

Uncle Fu shook his head, then got up and said: "You don't have to worry about the old man, young master, my old bones are getting more and more vigorous. If I lie in bed all day, I will lie down and get sick, young master, rest first! The old man is back! The workshop is arranged!"

Li Zexuan quickly got up to say goodbye.

After a while, Fu Bo disappeared from the sight of the husband and wife, only to hear Han Yuxi say: "Xiang Gong is still obedient to rest, do you have to go to find..."

Before she could finish her words, Li Zexuan covered her mouth with his hand, "Hey! You! What nonsense are you talking about? Let's go! Let's go back, sleeping alone is not like sleeping! Haha!"

"Hmm....don't~!"

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